Ratchet-drill



(No Model.)

P. R. ERICKSON.

.2 sheets-sheet 1`.

RATGHBT DRILL.

Patented Sept. 25, 1888.v

WITNESSES.

y INVENTOR:

BY Lum ATTORNEYS.l

(No Model.) 2 sh'ets-sheeu 2.

P. R. ERICKSON.

RA'IGHBT DRILL.

ATTORNEYS.

NV VETERS, Phoil-Khogrnphnr. Wilhlngon. D. G

UNITED STATES PATENT OEEICE.

PETER It. ERICKSON, OF ISHPEMING, MICHIGAN.

RATCH ET-D RILL..

SPECIFICATION forming part of Letters Patent No. 390,013, datedSeptember 25, 1888.

Application tiled April 19, 1888.

T all whom, it may concern:

Be it known that I, PETER R. ERIcKsoN,of Ishpeming, in the county ofMarquette and State of Michigan, have invented a new and ImprovedRatchet-Drill, of which the following is a full, clear, and exactdescription.

My invention relates to an improvement in ratchet-drills, and has forits object to simplify the construction of such and provide a meanswhereby the drill may be readily inserted and the Aaction of the drillreversed, and wherein, also, the device will be durable and can beconveniently manipulated.

The invention consists in the construction and 4combination of theseveral parts, as will be hereinafter fully set forth, and pointed outin the claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specitication, in which similar letters of reference indicatecorresponding parts in all the iigures.

Figure 1 is a vertical longitudinal section through the device. Fig. 2is a transverse section on line 00x of Fig. 1. Fig. 3 is a verticallongitudinal section through a slightlymodified form, and Fig. 4 is atransverse section on line yy of Fig. 3. Fig. 5 is a side elevation; andFigs. 6, 7, and 8 are detail views.

In carrying out the invention a hollow interiorly-threaded spindle, 1,is provided with a chuck, 2, securely attached at one end, havingintegral with the inner face and in contact with the spindle a flange,3, above which flange a series of teeth, 4, are produced.

The chuck consists of a body, 5, provided, as aforesaid,with the teethand flange at one end, and at the other end with a reducedextcriorlythreaded portion, 6. The body is further provided with a bore,7, extending longitudinally through, which bore is of varied diameter,as shown in Figs. 1 and 8, the outer or larger portion ofthe bore beingadapted to receive a split bushing, 8, purposed to hold the drill 9,theintermediate portion,the shank of the drill, and the inner and smallestportion of the bore, which is rectangular, being provided to receive arectangular projection, 10, at the end of aforesaid drill-shank. Throughthe body, from side to side, an aperture, 11, is projected, for apurpose hereinafter set forth.

Serial No. 271,170. (No model.)

To complete the chuck,a clamping-ring, 12, is screwed upon the body overthe bushing, a portion of the exterior of which ring is faced to receivea wrench. The Iend of the spindle upon which the chuck is secured ispreferably made solid.

Upon the outer end of the spindle 1 a headpiece, 13, is screwed,provided at the upper edge upon the inner end with a series of teeth,14, and within said teeth with an annular recess, 15. The outer end ofthe cap is faced to ,receive a wrench, and from said end av hollow andinteriorly-threaded cylindrical shank,16, is projected, which shank maybe of any approved length. Over the cap-shank asleeve, 17, isslid,c1osed at the outer end, which end is adapted to a proper bearingupon a breastplate or other suitable rest. The sleeve 17 is made toslide upon the cap-shank, and is held at any point thereon through themedium of an interior central and longitudinal threaded tongue, 18, thetongue being adapted for entrance in the bore ofthe cap-shank 16, asillustrated in Fig. 1.

In order to adapt the device for a low or boiler ratchet, the top pieceor cap is unscrewed and replaced by a short interiorly-threaded cap, 19,as illustrated in Fig. 3, and a rod,20, provided with a suitable head,is screwed through the cap 19 into the spindle 1. Between the cap andthe chuck two collars, 21 and 22, of different width, are held to slideupon the spindle--one ring, the narrowest, engaging the flange upon thechuck, and the other entering the recess in the cap.

A housing,23, is provided for the device, in'

which the spindle 1 and its attached parts are held, the said housingbeing adapted to rotate upon the spindle. Within the housing, atsuitable distances apart, toothed rings 24 and 25 are secured, the teethbeing upon the outer edges and adapted to mesh, respectively,withtheteeth upon the chuck-body and cap. The said rings are further adaptedto encircle the respective collars 21 and 22, and to them the housing isheld by screws, as shown in Figs. 1, 3, and et.

Between the collars 2l and 22 the spindle is partially surrounded by thebifurcated arms 26 ofa shiftinglever, 27, which lever is piv- IOO otedin the housing below the spindle, as illustrated in Figs. 1 and Thelower or pivoted end of the shifting-lever is at right angles to thebifurcated end,and at that point inthe nnder edge a recess, 2S, is cut,preferably more or less segmental.

As a means of actuating the shifting'lever, a dog, 29, is provided,whose upper end is adapted for engagement with the lever within therecess, the lower end being secured to a headed pin, 30, or equivalentdevice, which device is projected through a longitudinal slot, 3l, inthe housing, as illustrated in Fig. 5.

To the housing` a tubular handle, 32, is secured by a screw-thread, orin any other suitable manner, as illustrated in Figs. l and 2, in theextremity of which handle a plug, 33, is screwed. Upon the plug one endof a coil or spindle sp ringf, is made to bear, the other end restingagainst a collar, 35, integral with a pin, 36, which pin is projectedpartially through the spring, and likewise carried to an engagement withthe base of the dog 29. Thus by screwing the plug into or out of thehandle the dog is made to engage the shifting-lever in a more or lesspositive manner.

In operation,when it is desirous to manipulate the device either to theright or left, the

pin 30 is given about an eighth tnrn,which sospaees the collars as thatin the manipulation of the handle the toothed rings secured to thehousing may be made to engage with either the teeth upon the chuck orthose upon the cap.

` XVhcn the shifting-lever is thrown positively to the right or left,the spindle is carried in the opposite direction, and the ring upon thatside brought into engagement with the proper set of teeth fixed to thespindle, disengaging at the same time the other ring.

The slot in the chuck is intended to receive a drill or other suitabletool, while the body may be conveniently held stationary while the capis being compressed upon the bushing by the aid of a wrench, thusobviating the necessity of two wrenches.

Having thus described my invention, whatl claim as new, and desire tosecure by Letters Patent, is-

l. The combination, with a spindle, achuck secured at one end having aninner toothed surface, adetachable cap at the other end, provided withan inner toothed surface, a supporting device carried by the cap, andcollars loosely mounted upon the spindle, of a housing, toothed ringsinteriorly secured to the same, a shifting-lever pivoted in the housing,and means, substantially as described, for actuating said lever, as andfor the purposes set forth.

2. The combination, with aspindle, achuck secured at one end having aninner toothed surface, a detachable cap at the opposite end, providedwith an inner toothed surface, a supporting device carried by the cap,and collars loosely mounted upon the spindle, ofa housing, toothed ringsinteriorly secured to the same, a bifurcated shifting-lever pivoted inthe housing, an actuating-dog engaging said lever, and means,substantially as described, for manipulating and controlling the dog, asand for the purposes herein set forth.

The combination, with a spindle, a chuck secured at one end of thespindle, having an inner toothed surface, a detachable cap held upon theopposite end of said spindle, provided with an inner toothed surface, asupporting device carried by the cap, and collars loosely mounted uponthe spindle, of a housing, toothed rings interiorly secured to the same,a bifureated and recessed shifting-lever pivoted in the housing, anactuatingdog engaging said lever, a handle secu red to the housingcontaining a spring, and a shouldered pin bearing upon said spring andagainst said dog, substantially as and for the purposes herein setforth.

4. The combination, with a hollow interiorly-threaded spindle, a chucksecured at one end of said spindle, having an inner toothed surface, adetachable cap secured at the other end of said spindle, having also aninner toothed surface, a supporting device sustained by said cap, andcollars loosely mounted upon the spindle, of a housing provided with aslot in one face, toothed rings interiorly secured to the same, abifureated shifting-lever pivoted in the housing, an actuating-dogengaging said lever, a headed pin attached to said lever and projectingthrough the slot in the housing, a handle attached to the housing, aspring coiled in said handle, and a shouldered pin resting upon said springand bearing against the dog, substantially as shown and described.

PETER l. ERICKSON .y

Vi tnesses:

C. l?. SoDnRGRnN, Mi 1in JoNsoN.

